No, I'm not 100% sure why this happened, but I do know that the moment I turned over what I thought I should do and traded it for what God wanted me to do, a revolution in which the ambition I had once lost, returned.
What do you do with this renewed ambition? You exert as much energy into it that you possibly can, leaping obstacles, jumping fences, and persisting on fire with the passion that gets you to your destination. There isn't anyone pushing you now, it's just you and the choice between laziness and a dream.
It's your dream; chase it.